Book-clasp



UNITED STATES PATENT OFFICE.

CHARLES FOLSOM, OF CAMBRIDGE, MASSACHUSETTS.

BOOK-CLASP.

Speccation of Letters Patent No. 13,166, dated July 3, 1855.

To all whom t may concern Y Be it known that I, CHARLES FOLSOM, ofCambridge, and county Of Middlesex and State Of Massachusetts, haveinvented a certain new and useful Book-Clasp, of which the following isa full, clear, and eXactdescription, reference being had to theaccompanying drawings, making part of this specification.

Figure l is a view of the clasp; Fig. 2, a view Of a book having two Ofthe clasps att-ached.

Book clasps as heretofore made can only be used upon those books towhich they are permanently applied by the binder.

The Object Of my invention is tO produce a clasp that may beinstantaneously applied to books already bound, and may be adjusted tothose Of any size Or thickness.

My improved clasp is particularly applicable tO folios of large sizewhich Otherwise without assistance are unable to stand by themselves.

To enable others skilled in the art to make and use my invention I willproceed to describe the same.

A, yB, are strips of sheet metal bent at right angles as seen in thedrawings, One Of them being furnished with a slot a, and the other witha tightening screw b, by which. the two may be secured together, toaccommodate the clasp to books of diiferent sizes. It is placed upon thebook in t-he manner represented in Fig. 2 by which means the most'cumbersome folio may be made to stand upright and rm as when secured bypermanent clasps.

What I claim as my invention and desire to secure by Letters Patent isThe wit-hin described book clasp, constructed and operating inv themanner substantially as set forth. l

CHARLES FOLSOM.

Witnesses:

SAM. COOPER, JOHN S. CLOW.

